Attempt to add a fresh variable to Patterns.Cap (still not working)

compile/compile.ml

@@ -184,10 +184,21 @@ and compile_branch env br =
   (* We add a fresh variable "pat<nb>:x" for each pattern
      TODO: Add a fresh variable for cap too. *)
   let t, _, d = br.Typed.br_pat.Patterns.descr in
-  let fv = match d with
-    | Patterns.Constr(_) | Patterns.Cap(_) -> Patterns.fv br.Typed.br_pat
-    | _ -> incr Patterns.counter; (Patterns.fv br.Typed.br_pat)
-    @ [!Patterns.counter, "pat" ^ (string_of_int !Patterns.counter) ^ ":x"] in
+  let fv, d = match d with
+    | Patterns.Constr(_) -> Patterns.fv br.Typed.br_pat, d
+    | Patterns.Cap((t1, _, d1), (t2, _, d2)) -> incr Patterns.counter;
+      let fv = (Patterns.fv br.Typed.br_pat)
+	@ [!Patterns.counter, "pat" ^ (string_of_int !Patterns.counter) ^ ":x"] in
+      fv, Patterns.Cap((t1, fv, d1), (t2, fv, d2))
+    | Patterns.Cup((t1, _, d1), (t2, _, d2)) -> incr Patterns.counter;
+      let fv = (Patterns.fv br.Typed.br_pat)
+	@ [!Patterns.counter, "pat" ^ (string_of_int !Patterns.counter) ^ ":x"] in
+      fv, Patterns.Cup((t1, fv, d1), (t2, fv, d2))
+    | _ -> incr Patterns.counter;
+      let fv = (Patterns.fv br.Typed.br_pat)
+	@ [!Patterns.counter, "pat" ^ (string_of_int !Patterns.counter) ^ ":x"] in
+      fv, d
+  in
   let pat = { br.Typed.br_pat with Patterns.descr=(t,fv,d); Patterns.fv=fv } in
   let env = List.fold_left enter_local env fv in
   let m = Patterns.filter (Types.descr (Patterns.accept pat)) pat in